Results 11 to 20 of about 445,914 (314)

Twisted C‐Brackets

open access: yesFortschritte der Physik, 2022
AbstractWe consider the double field formulation of the closed bosonic string theory, and calculate the Poisson bracket algebra of the symmetry generators governing both general coordinate and local gauge transformations. Parameters of both of these symmetries depend on a double coordinate, defined as a direct sum of the initial and T‐dual coordinate ...
Davidović, Ljubica   +2 more
openaire   +3 more sources

Kaestner brackets

open access: yesTopology and its Applications, 2020
We introduce \textit{Kaestner brackets}, a generalization of biquandle brackets to the case of parity biquandles. This infinite set of quantum enhancements of the biquandle counting invariant for oriented virtual knots and links includes the classical quantum invariants, the quandle and biquandle $2$-cocycle invariants and the classical biquandle ...
Kobayashi, Forest, Nelson, Sam
openaire   +3 more sources

Treatment of Gunshot-Related Mandibular Fracture with Splint-Guided Reduction: Case Report

open access: yesBalkan Journal of Dental Medicine, 2021
Background/Aim: Gunshot injury-related mandibular fractures often have a complex pattern, characterized by comminution, bone loss, and soft-tissue avulsion. The management is difficult and varies between individual cases.
Kaya Demet   +3 more
doaj   +1 more source

Effect of a Desensitizing Agent on Shear Bond Strength of Ceramic Bracket on Previously Bleached Teeth

open access: yesApplied Sciences, 2023
This study aims to analyze the effect of desensitizing agents on the shear bond strength (SBS) of ceramic brackets after in-office bleaching procedures. Twenty-seven extracted premolars were equally divided into three groups (n = 9).
Muhammad Haikal Mahardhika   +3 more
doaj   +1 more source

Audio-digital recordings for surveillance in clinical trials of major depressive disorder

open access: yesContemporary Clinical Trials Communications, 2019
Ratings surveillance is used in clinical trials to assure ratings reliability of site-based scores. One surveillance method employs audio-digital recordings of site-based clinician interviews to obtain remote, site-independent scores for assessment of ...
Steven D. Targum, Christopher J. Catania
doaj   +1 more source

BRACKETS [PDF]

open access: yesInternational Journal of Geometric Methods in Modern Physics, 2013
We review origins and main properties of the most important bracket operations appearing canonically in differential geometry and mathematical physics in the classical, as well as in the supergeometric setting. The review is supplemented by some new concepts and examples.
openaire   +2 more sources

Poisson brackets and commutator brackets. I [PDF]

open access: yesProceedings of the American Mathematical Society, 1977
A previous result, that for certain problems in Hamiltonian mechanics the commutator bracket is determined by the Poisson bracket, is here extended to include certain problems in Hamiltonian field theory.
openaire   +2 more sources

The results of clinical testing of photodynamic therapy in the complex treatment of gingivitis, complicating orthodontic treatment with bracket systems. [PDF]

open access: yesMedičnì Perspektivi, 2016
In spite ofa high efficiency, the use of brackets in orthodontic patients can provoke the development of inflammatory processes in marginal periodontal tissues.
V. A. Samoylenko
doaj   +2 more sources

On Field Theoretic Generalizations of a Poisson Algebra [PDF]

open access: yes, 1997
A few generalizations of a Poisson algebra to field theory canonically formulated in terms of the polymomentum variables are discussed. A graded Poisson bracket on differential forms and an $(n+1)$-ary bracket on functions are considered.
Beig   +22 more
core   +3 more sources

The Hamiltonian description of incompressible fluid ellipsoids [PDF]

open access: yes, 2008
We construct the noncanonical Poisson bracket associated with the phase space of first order moments of the velocity field and quadratic moments of the density of a fluid with a free- boundary, constrained by the condition of incompressibility.
Biello, J. A.   +2 more
core   +1 more source

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